Camera optical lens

ABSTRACT

A camera optical lens includes, from an object side to an image side: a first lens with a negative refractive power, a second lens, a third lens with a positive refractive power, and a fourth lens with a negative refractive power. The camera optical lens satisfies the conditions of −5.00≤f1/f≤−2.00, 0.40≤f3/f≤0.70, −1.20≤f4/f≤−0.80, 2.50≤(R3+R4)/(R3−R4)≤20.00, and 1.20≤d1/d2≤3.50. The camera optical lens of the present disclosure has excellent optical performances, and meanwhile can meet design requirements of a wide-angle and ultra-thin.

TECHNICAL FIELD

The present disclosure relates to an optical lens, particular, to acamera optical lens suitable for handheld devices, such as smart phonesand digital cameras, and imaging devices, such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, and as the progress ofthe semiconductor manufacturing technology makes the pixel size of thephotosensitive devices become smaller, plus the current developmenttrend of electronic products towards better functions and thinner andsmaller dimensions, miniature camera lens with good imaging qualitytherefore have become a mainstream in the market.

In order to obtain better imaging quality, the lens that istraditionally equipped in mobile phone cameras adopts a three-piece,four-piece, or five-piece lens structure. Also, with the development oftechnology and the increase of the diverse demands of users, and as thepixel area of photosensitive devices is becoming smaller and smaller andthe requirement of a system on the imaging quality is improvingconstantly, although the four-piece lens already has good opticalperformance, its focal power, lens spacing and lens shape are stillunreasonable, resulting in the lens structure still cannot meet thedesign requirements of a wide-angle and small height while having goodoptical performance.

Therefore, it is necessary to provide a camera optical lens that hasbetter optical performance and also meets design requirements of awide-angle, small height and ultra-thin.

SUMMARY

In the present invention, a camera optical lens has excellent opticalcharacteristics with ultra-thin and a wide angle.

The present disclosure provides a camera optical lens including, from anobject side to an image side: a first lens with a negative refractivepower, a second lens, a third lens with a positive refractive power, anda fourth lens with a negative refractive power. Wherein the cameraoptical lens satisfies the conditions of −5.00≤f1/f≤−2.00,0.40≤f3/f≤0.70, −1.20≤f4/f≤−0.80, 2.50≤(R3+R4)/(R3−R4)≤20.00, and1.20≤d1/d2≤3.50. Herein f denotes a focal length of the camera opticallens, f1 denotes a focal length of the first lens, f3 denotes a focallength of the third lens, f4 denotes a focal length of the fourth lens,R3 denotes a curvature radius of an object-side surface of the secondlens, R4 denotes a curvature radius of an image-side surface of thesecond lens, d1 denotes an on-axis thickness of the first lens, and d2denotes an on-axis distance from an image-side surface of the first lensto the object-side surface of the second lens.

The camera optical lens further satisfies a condition of1.50≤R7/R8≤6.00. Herein R7 denotes a curvature radius of an object-sidesurface of the fourth lens and R8 denotes a curvature radius of animage-side surface of the fourth lens.

Further, an object-side surface of the first lens is convex in aparaxial region, and the image-side surface of the first lens is concavein the paraxial region, the camera optical lens further satisfies theconditions of 1.78≤(R1+R2)/(R1−R2)≤7.50 and 0.05≤d1/TTL≤0.18. Herein R1denotes a curvature radius of the object-side surface of the first lens,R2 denotes a curvature radius of the image-side surface of the firstlens, and TTL denotes a total optical length from the object-sidesurface of the first lens to an image surface of the camera optical lensalong an optical axis.

The camera optical lens further satisfies the conditions of2.85≤(R1+R2)/(R1−R2)≤6.00 and 0.08≤d1/TTL≤0.15.

Further, the object-side surface of the second lens is convex in aparaxial region, and the image-side surface of the second lens isconcave in the paraxial region, the camera optical lens furthersatisfies the conditions of −1181.57≤f2/f≤8.46 and 0.14≤d3/TTL≤0.52.Herein f2 denotes a focal length of the second lens, d3 denotes anon-axis thickness of the second lens, and TTL denotes a total opticallength from an object-side surface of the first lens to an image surfaceof the camera optical lens along an optical axis.

The camera optical lens further satisfies the conditions of−738.48≤f2/f≤6.77 and 0.23≤d3/TTL≤0.42.

Further, an object-side surface of the third lens is convex in aparaxial region, and an image-side surface of the third lens is convexin the paraxial region, the camera optical lens further satisfies theconditions of 0.04≤(R5+R6)/(R5−R6)≤0.27 and 0.05≤d5/TTL≤0.35. Herein R5denotes a curvature radius of the object-side surface of the third lens,R6 denotes a curvature radius of the image-side surface of the thirdlens, d5 denotes an on-axis thickness of the third lens, and TTL denotesa total optical length from an object-side surface of the first lens toan image surface of the camera optical lens along an optical axis.

The camera optical lens further satisfies the conditions of0.07≤(R5+R6)/(R5−R6)≤0.22 and 0.08≤d5/TTL≤0.28.

Further, an object-side surface of the fourth lens is convex in aparaxial region, and an image-side surface of the fourth lens is concavein the paraxial region, the camera optical lens further satisfies theconditions of 0.70≤(R7+R8)/(R7−R8)≤7.42 and 0.01≤d7/TTL≤0.20. Herein R7denotes a curvature radius of the object-side surface of the fourthlens, R8 denotes a curvature radius of the image-side surface of thefourth lens, d7 denotes an on-axis thickness of the fourth lens, and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.

The camera optical lens further satisfies the conditions of1.12≤(R7+R8)/(R7−R8)≤5.93 and 0.02≤d7/TTL≤0.16.

The camera optical lens further satisfies a condition of TTL/IH≤2.32.Herein IH denotes an image height of the camera optical lens and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.

The camera optical lens further satisfies a condition of FOV≥89.00°.Herein FOV denotes a field of view of the camera optical lens in adiagonal direction.

The camera optical lens further satisfies a condition of−6.74≤f12/f≤−1.18. Herein f12 denotes a combined focal length of thefirst lens and the second lens.

The camera optical lens further satisfies a condition of FNO≤2.27.Herein FNO denotes an F number of the camera optical lens.

Advantageous effects of the present disclosure are that, the cameraoptical lens has excellent optical performances, and also has awide-angle and is ultra-thin. The camera optical lens is especiallysuitable for mobile camera lens components and WEB camera lens composedof high pixel CCD, CMOS.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate the technical solutions in theembodiments of the present disclosure, the following will brieflydescribe the accompanying drawings used in the description of theembodiments. Obviously, the accompanying drawings in the followingdescription are only some embodiments of the present disclosure. For aperson of ordinary skill in the art, other drawings may be obtained fromthese drawings without creative work.

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

FIG. 13 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 4 of the present disclosure.

FIG. 14 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 13.

FIG. 15 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 13.

FIG. 16 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 13.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objectives, technical solutions, and advantages of thepresent disclosure clearer, embodiments of the present disclosure aredescribed in detail with reference to accompanying drawings in thefollowing. A person of ordinary skill in the art should understand that,in the embodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure may be implemented.

Embodiment 1

Referring to the drawings, the present disclosure provides a cameraoptical lens 10. FIG. 1 is a schematic diagram of a structure of acamera optical lens 10 according to Embodiment 1 of the presentdisclosure. The camera optical lens 10 includes four lenses.Specifically, a left side is an object side, a right side is an imageside, the camera optical lens 10 includes, from the object side to theimage side: a first lens L1, an aperture S1, a second lens L2, a thirdlens L3, and a fourth lens L4. An optical element such as an opticalfilter (GF) may be arranged between the fourth lens L4 and an imagesurface Si.

In the embodiment, the first lens L1, the second lens L2, the third lensL3, and the fourth lens L4 are all made of plastic material. In otherembodiments, each lens may also be made of other materials.

In this embodiment, the first lens L1 has a negative refractive power,the second lens L2 has a negative refractive power, the third lens L3has a positive refractive power, and the fourth lens L4 has a negativerefractive power.

In the embodiment, a focal length of the camera optical lens 10 isdefined as f, a focal length of the first lens L1 is defined as f1, andthe camera optical lens 10 satisfies a condition of −5.00≤f1/f≤−2.00,which specifies a ratio of the focal length f1 of the first lens L1 tothe focal length f of the camera optical lens 10. Within this range, aspherical aberration and a field curvature of the camera optical lens 10can be effectively balanced.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of 0.40≤f3/f≤0.70, whichspecifies a ratio of the focal length f3 of the third lens L3 to thefocal length f of the camera optical lens 10. By a reasonabledistribution of the focal length, the camera optical lens 10 has anexcellent imaging quality and a lower sensitivity.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of −1.20≤f4/f≤−0.80, whichspecifies a ratio of the focal length f4 of the fourth lens L4 to thefocal length f of the camera optical lens 10. By a reasonabledistribution of the focal length, the camera optical lens 10 has anexcellent imaging quality and a lower sensitivity.

A curvature radius of an object-side surface of the second lens L2 isdefined as R3, a curvature radius of an image-side surface of the secondlens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of 2.50≤(R3+R4)/(R3−R4)≤20.00, which specifies ashape of the second lens L2. Within this range, a degree of deflectionof light passing through the lens can be alleviated, and aberrations canbe reduced effectively.

An on-axis thickness of the first lens L1 is defined as d1, an on-axisdistance from an image-side surface of the first lens L1 to theobject-side surface of the second lens L2 is defined as d2, and thecamera optical lens 10 further satisfies a condition of1.20≤d1/d2≤23.50, which specifies a ratio of the on-axis thickness d1 ofthe first lens L1 to the on-axis distance d2 from the image-side surfaceof the first lens L1 to the object-side surface of the second lens L2.Within this range, it is beneficial for reducing a total optical lengthand thereby realizing an ultra-thin effect.

A curvature radius of an object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of an image-side surface of the fourthlens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of 1.50≤R7/R8≤6.00, which specifies a shape of thefourth lens L4. Within this range, a development towards ultra-thin anda wide angle lenses would facilitate correcting a problem of an off-axisaberration.

In the embodiment, an object-side surface of the first lens L1 is convexin a paraxial region, and the image-side surface of the first lens L1 isconcave in the paraxial region. In other embodiments, the object-sidesurface and the image-side surface of the first lens L1 may also be setto other concave or convex distribution situations.

A curvature radius of the object-side surface of the first lens L1 isdefined as R1, a curvature radius of the image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of 1.78≤(R1+R2)/(R1−R2)≤7.50. By reasonablycontrolling a shape of the first lens L1, so that the first lens L1 caneffectively correct a spherical aberration of the camera optical lens.The camera optical lens 10 further satisfies a condition of2.85≤(R1+R2)/(R1−R2)≤6.00.

A total optical length from the object-side surface of the first lens L1to an image surface of the camera optical lens 10 along an optical axisis defined as TTL, and the camera optical lens 10 satisfies a conditionof 0.05≤d1/TTL≤0.18. Within this range, it is beneficial for achievingultra-thin. The camera optical lens 10 further satisfies a condition of0.08≤d1/TTL≤0.15.

In the embodiment, the object-side surface of the second lens L2 isconvex in the paraxial region, and the image-side surface of the secondlens L2 is concave in the paraxial region. In other embodiments, theobject-side surface and the image-side surface of the second lens L2 mayalso be set to other concave or convex distribution situations.

In the embodiment, a focal length of the second lens L2 is defined asf2, and the camera optical lens 10 satisfies a condition of−1181.57≤2/f≤8.46. By controlling the negative refractive power of thesecond lens L2 within a reasonable range, it is beneficial to correct anaberration of the camera optical lens. The camera optical lens 10further satisfies a condition of −738.48≤f2/f≤6.77.

An on-axis thickness of the second lens L2 is defined as d3, and thecamera optical lens 10 further satisfies a condition of0.14≤d3/TTL≤0.52. Within this range, it is beneficial for achievingultra-thin. The camera optical lens 10 further satisfies a condition of0.23≤d3/TTL≤0.42.

In the embodiment, an object-side surface of the third lens L3 is convexin the paraxial region, and an image-side surface of the third lens L3is convex in the paraxial region. In other embodiments, the object-sidesurface and the image-side surface of the third lens L3 may also be setto other concave or convex distribution situations.

A curvature radius of the object-side surface of the third lens isdefined as R5, a curvature radius of the image-side surface of the thirdlens is defined as R6, and the camera optical lens 10 further satisfiesa condition of 0.04≤(R5+R6)/(R5−R6)≤0.27, which specifies a shape of thethird lens L3, it is conducive to a forming of the third lens L3. Withinthis range, a degree of deflection of light passing through the lens canbe alleviated, and aberrations can be reduced effectively. The cameraoptical lens 10 further satisfies a condition of0.07≤(R5+R6)/(R5−R6)≤0.22.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.05≤d5/TTL≤0.35. Within this range, it is beneficial for achievingultra-thin. The camera optical lens 10 further satisfies a condition of0.08≤d5/TTL≤0.28.

In the embodiment, the object-side surface of the fourth lens L4 isconvex in the paraxial region, and the image-side surface of the fourthlens L4 is concave in the paraxial region. In other embodiments, theobject-side surface and the image-side surface of the fourth lens L4 mayalso be set to other concave or convex distribution situations.

The camera optical lens 10 further satisfies a condition of0.70≤(R7+R8)/(R7−R8)≤7.42, which specifies a shape of the fourth lensL4. Within this range, a development towards ultra-thin and a wide-anglelens would facilitate correcting a problem of an off-axis aberration.The camera optical lens 10 further satisfies a condition of1.12≤(R7+R8)/(R7−R8)≤5.93.

An on-axis thickness of the fourth lens L4 is d7, and the camera opticallens 10 further satisfies a condition of 0.01≤d7/TTL≤0.20. Within thisrange, it is beneficial for achieving ultra-thin. The camera opticallens 10 further satisfies a condition of 0.02≤d7/TTL≤0.16.

In the embodiment, an image height of the camera optical lens 10 isdefined as IH, and the camera optical lens 10 further satisfies acondition of TTL/IH≤2.32, which is beneficial for achieving ultra-thin.

A field of view of the camera optical lens 10 in a diagonal direction isdefined as FOV, and the camera optical lens 10 further satisfies acondition of FOV≥89.00°, which specifies a range of the field of view ofthe camera optical lens 10, so that the camera optical lens 10 has awide-angle.

A combined focal length of the first lens L1 and the second lens L2 isdefined as f12, and the camera optical lens 10 further satisfies acondition of −6.74≤f12/f≤−1.18. Within this range, an aberration and adistortion of the camera optical lens 10 can be eliminated, and a backfocal length of the camera optical lens 10 can be suppressed to maintaina miniaturization of an imaging lens system group. The camera opticallens 10 further satisfies a condition of −4.21≤f12/f≤−1.48.

An F number of the camera optical lens 10 is defined as FNO. The cameraoptical lens 10 further satisfies a condition of FNO≤2.27. When thecondition is satisfied, the camera optical lens 10 could have a largeaperture and an excellent optical performance. The camera optical lens10 further satisfies a condition of FNO≤2.22.

When satisfying above conditions, the camera optical lens 10 hasexcellent optical performances, and meanwhile can meet designrequirements of a wide-angle and ultra-thin. According thecharacteristics of the camera optical lens 10, it is particularlysuitable for a mobile camera lens component and a WEB camera lenscomposed of high pixel CCD, CMOS.

In the following, embodiments will be used to describe the cameraoptical lens 10 of the present disclosure. The symbols recorded in eachembodiment will be described as follows. The focal length, on-axisdistance, curvature radius, on-axis thickness, inflexion point position,and arrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens L1 to the image surface S1 of the cameraoptical lens along the optical axis) in mm.

The F number (FNO) means a ratio of an effective focal length of thecamera optical lens to an entrance pupil diameter (ENPD).

In addition, inflexion points and/or arrest points can be arranged onthe object-side surface and the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

Table 1 and Table 2 show design data of the camera optical lens 10 shownin FIG. 1.

TABLE 1 R d nd vd S1 ∞ d0= −0.676 R1 2.628 d1= 0.478 nd1 1.6700 v1 19.39R2 1.752 d2= 0.196 R3 5.303 d3= 1.458 nd2 1.5444 v2 55.82 R4 2.277 d4=0.023 R5 1.144 d5= 1.092 nd3 1.5444 v3 55.82 R6 −0.845  d6= 0.130 R75.064 d7= 0.573 nd4 1.6700 v4 19.39 R8 0.850 d8= 0.443 R9 ∞ d9= 0.210ndg 1.5168 vg 64.17 R10 ∞ d10= 0.268

Herein, meanings of various symbols will be described as follows.

S1: aperture.

R: curvature radius of an optical surface, a central curvature radiusfor a lens.

R1: curvature radius of the object-side surface of the first lens L1.

R2: curvature radius of the image-side surface of the first lens L1.

R3: curvature radius of the object-side surface of the second lens L2.

R4: curvature radius of the image-side surface of the second lens L2.

R5: curvature radius of the object-side surface of the third lens L3.

R6: curvature radius of the image-side surface of the third lens L3.

R7: curvature radius of the object-side surface of the fourth lens L4.

R8: curvature radius of the image-side surface of the fourth lens L4.

R9: curvature radius of an object-side surface of the optical filter(GF).

R10: curvature radius of an image-side surface of the optical filter(GF).

d: on-axis thickness of a lens and an on-axis distance between lens.

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1.

d1: on-axis thickness of the first lens L1.

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2.

d3: on-axis thickness of the second lens L2.

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3.

d5: on-axis thickness of the third lens L3.

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4.

d7: on-axis thickness of the fourth lens L4.

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the optical filter (GF).

d9: on-axis thickness of the optical filter (GF).

d10: on-axis distance from the image-side surface of the optical filter(GF) to the image surface Si.

nd: refractive index of a d line (when the d line is green light with awavelength of 550 nm).

nd1: refractive index of the d line of the first lens L1.

nd2: refractive index of the d line of the second lens L2.

nd3: refractive index of the d line of the third lens L3.

nd4: refractive index of the d line of the fourth lens L4.

ndg: refractive index of the d line of the optical filter (GF).

vd: abbe number.

v1: abbe number of the first lens L1.

v2: abbe number of the second lens L2.

v3: abbe number of the third lens L3.

v4: abbe number of the fourth lens L4.

vg: abbe number of the optical filter (GF).

Table 2 shows aspherical surface data of each lens of the camera opticallens 10 in Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 R1 −3.2950E+01 3.6906E−01  4.5495E−01 −6.3045E+00   3.1072E+01−8.6933E+01  R2 −2.4753E+01 1.1901E+00 −3.5429E+00 5.5772E+01−6.9578E+02 5.5816E+03 R3  3.5607E+01 3.4399E−01 −5.9408E+00 1.4171E+02−2.0958E+03 1.9320E+04 R4 −3.9553E+01 3.1155E−01 −4.9562E+00 1.7092E+01−3.7239E+01 5.4702E+01 R5 −3.4565E+00 3.1521E−01 −3.0160E+00 9.6873E+00−1.9405E+01 2.5188E+01 R6 −3.6373E+00 4.6602E−01 −1.5687E+00 3.5642E+00−6.1203E+00 6.9834E+00 R7  3.9678E+00 8.5666E−02 −1.2274E+00 1.9859E+00−2.4342E+00 2.3379E+00 R8 −5.3775E+00 −9.6837E−02  −2.2544E−014.1781E−01 −3.6318E−01 1.8959E−01 Conic coefficient Aspheric surfacecoefficients k A14 A16 A18 A20 R1 −3.2950E+01  1.4858E+02 −1.5300E+02  8.7366E+01 −2.1320E+01  R2 −2.4753E+01 −2.7385E+04 8.0307E+04−1.2816E+05 8.4623E+04 R3  3.5607E+01 −1.1063E+05 3.8129E+05 −7.2113E+055.7151E+05 R4 −3.9553E+01 −5.3684E+01 3.3829E+01 −1.2447E+01 2.0509E+00R5 −3.4565E+00 −2.1122E+01 1.1040E+01 −3.2665E+00 4.1690E−01 R6−3.6373E+00 −5.0566E+00 2.2338E+00 −5.4892E−01 5.7530E−02 R7  3.9678E+00−1.5072E+00 5.8754E−01 −1.2389E−01 1.0805E−02 R8 −5.3775E+00 −6.1798E−021.2318E−02 −1.3763E−03 6.6193E−05

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe condition (1).

z=(cr ²)/{1+[1−(k+1)(c ² r ²)]^(1/2) }+A4r ⁴ +A6r ⁶ +A8r ⁸ +A10r ¹⁰+A12r ¹² +A14r ¹⁴ +A16r ¹⁶ +A18r ¹⁸ +A20r ²⁰  (1)

Herein, k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18and A20 are aspherical surface coefficients, c is a curvature of theoptical surface, r is a vertical distance between a point on anaspherical curve and the optic axis, and z is an aspherical depth (avertical distance between a point on an aspherical surface, having adistance of r from the optic axis, and a surface tangent to a vertex ofthe aspherical surface on the optic axis).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. Herein P1R1 and P1R2 represent the object-sidesurface and the image-side surface of the first lens L1, P2R1 and P2R2represent the object-side surface and the image-side surface of thesecond lens L2, P3R1 and P3R2 represent the object-side surface and theimage-side surface of the third lens L3, P4R1 and P4R2 represent theobject-side surface and the image-side surface of the fourth lens L4.The data in the column named “inflexion point position” refer tovertical distances from inflexion points arranged on each lens surfaceto the optical axis of the camera optical lens 10. The data in thecolumn named “arrest point position” refer to vertical distances fromarrest points arranged on each lens surface to the optical axis of thecamera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 / / P1R2 0 / / P2R1 1 0.485 / P2R2 2 0.2750.995 P3R1 1 0.475 / P3R2 1 1.215 / P4R1 2 0.335 1.245 P4R2 2 0.4551.965

TABLE 4 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 1 0.445 P3R1 1 0.895 P3R2 0 / P4R1 1 0.505 P4R2 1 0.995

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nmafter passing the camera optical lens 10 according to Embodiment 1,respectively. FIG. 4 illustrates a field curvature and a distortion witha wavelength of 546 nm after passing the camera optical lens 10according to Embodiment 1. A field curvature S in FIG. 4 is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

Table 17 in the following shows various values of Embodiments 1, 2, 3,and 4, and also values corresponding to parameters which are specifiedin the above conditions.

As shown in Table 17, Embodiment 1 satisfies the above conditions.

In the embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 10 is 0.904 mm, an image height IH of 1.0H is 2.214 mm, anFOV is 96.00°. Thus, the camera optical lens 10 can meet the designrequirements of a wide-angle and ultra-thin, and its on-axis andoff-axis chromatic aberrations are fully corrected, thereby achievingexcellent optical characteristics.

Embodiment 2

FIG. 5 is a schematic diagram of a structure of a camera optical lens 20according to Embodiment 2 of the present disclosure. Embodiment 2 isbasically the same as Embodiment 1 and involves symbols having the samemeanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

In the embodiment, the second lens L2 has a positive refractive power.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0= −1.196 R1 1.003 d1= 0.631 nd1 1.6700 v1 19.39R2 0.566 d2= 0.524 R3 1.671 d3= 1.790 nd2 1.5444 v2 55.82 R4 1.367 d4=0.023 R5 1.083 d5= 0.539 nd3 1.5444 v3 55.82 R6 −0.764  d6= 0.026 R70.541 d7= 0.125 nd4 1.6700 v4 19.39 R8 0.359 d8= 0.443 R9 ∞ d9= 0.210ndg 1.5168 vg 64.17 R10 ∞ d10= 0.806

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 R1 −6.3524E+00 5.1697E−01  2.4206E−01 −6.3280E+00   3.1178E+01−8.6828E+01  R2 −7.8466E+00 3.3460E+00 −1.3620E+01 6.9080E+01−6.1958E+02 5.4398E+03 R3 −2.0258E+01 4.5523E−01 −3.1855E+00 1.0752E+02−1.9454E+03 1.9289E+04 R4 −4.9920E+01 2.2266E−01 −4.8556E+00 1.7086E+01−3.7256E+01 5.4714E+01 R5 −7.7430E+00 5.4243E−01 −2.9982E+00 9.4267E+00−1.9260E+01 2.5141E+01 R6 −9.9378E+00 8.5400E−01 −1.6727E+00 3.4969E+00−6.1315E+00 6.9870E+00 R7 −2.0891E+01 2.1718E−01 −1.1130E+00 1.9969E+00−2.4915E+00 2.3095E+00 R8 −9.5803E+00 −4.7307E−02  −2.6527E−014.1320E−01 −3.6344E−01 1.8931E−01 Conic coefficient Aspheric surfacecoefficients k A14 A16 A18 A20 R1 −6.3524E+00  1.4845E+02 −1.5278E+02  8.6623E+01 −2.0755E+01  R2 −7.8466E+00 −2.8227E+04 8.0662E+04−1.1761E+05 6.7436E+04 R3 −2.0258E+01 −1.1200E+05 3.8078E+05 −7.0291E+055.4419E+05 R4 −4.9920E+01 −5.3668E+01 3.3824E+01 −1.2461E+01 2.0612E+00R5 −7.7430E+00 −2.1139E+01 1.1050E+01 −3.2582E+00 4.1628E−01 R6−9.9378E+00 −5.0527E+00 2.2354E+00 −5.4889E−01 5.6979E−02 R7 −2.0891E+01−1.5040E+00 5.8994E−01 −1.2019E−01 1.0138E−02 R8 −9.5803E+00 −6.1961E−021.2290E−02 −1.3390E−03 1.2406E−04

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.965 / P1R2 1 0.575 / P2R1 0 / / P2R2 20.245 0.935 P3R1 2 0.575 1.135 P3R2 2 0.255 0.785 P4R1 2 0.375 1.285P4R2 2 0.325 1.385

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 / / P1R2 0 / / P2R1 0 / / P2R2 2 0.435 1.075 P3R1 20.885 1.215 P3R2 2 0.555 0.945 P4R1 1 0.795 / P4R2 1 0.875 /

FIG. 6 and FIG. illustrate a longitudinal aberration and a lateral colorwith wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nm afterpassing the camera optical lens 20 according to Embodiment 2,respectively. FIG. 8 illustrates a field curvature and a distortion witha wavelength of 546 nm after passing the camera optical lens 20according to Embodiment 2. A field curvature S in FIG. 8 is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

As shown in Table 17, Embodiment 2 satisfies the above conditions.

In the embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 20 is 1.025 mm, an image height IH of 1.0H is 2.214 mm, anFOV is 89.60°. Thus, the camera optical lens 20 can meet the designrequirements of a large aperture, a wide-angle and ultra-thin, and itson-axis and off-axis chromatic aberrations are fully corrected, therebyachieving excellent optical characteristics.

Embodiment 3

FIG. 9 is a schematic diagram of a structure of a camera optical lens 30according to Embodiment 3 of the present disclosure. Embodiment 3 isbasically the same as Embodiment 1 and involves symbols having the samemeanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0= −0.722 R1 3.001 d1= 0.550 nd1 1.6700 v1 19.39R2 1.686 d2= 0.158 R3 5.705 d3= 1.397 nd2 1.5444 v2 55.82 R4 5.161 d4=0.044 R5 1.263 d5= 1.151 nd3 1.5444 v3 55.82 R6 −1.059  d6= 0.071 R73.171 d7= 0.661 nd4 1.6700 v4 19.39 R8 0.928 d8= 0.443 R9 ∞ d9= 0.210ndg 1.5168 vg 64.17 R10 ∞ d10= 0.211

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 R1 −2.9756E+01 3.2859E−01  4.2270E−01 −6.2732E+00   3.1122E+01−8.6912E+01  R2 −1.7701E+01 1.1276E+00 −3.0322E+00 5.6117E+01−6.9836E+02 5.5819E+03 R3  5.0121E+01 3.2249E−01 −5.4361E+00 1.4158E+02−2.0991E+03 1.9311E+04 R4 −1.5025E+02 3.5648E−01 −4.9940E+00 1.7077E+01−3.7230E+01 5.4706E+01 R5 −1.4712E+00 3.2510E−01 −3.0089E+00 9.6885E+00−1.9412E+01 2.5183E+01 R6 −4.0245E+00 4.6524E−01 −1.5681E+00 3.5641E+00−6.1208E+00 6.9830E+00 R7 −3.0398E+00 5.1895E−02 −1.2310E+00 1.9880E+00−2.4328E+00 2.3384E+00 R8 −5.4918E+00 −1.0548E−01  −2.2200E−014.1770E−01 −3.6324E−01 1.8960E−01 Conic coefficient Aspherical surfacecoefficients k A14 A16 A18 A20 R1 −2.9756E+01  1.4848E+02 −1.5320E+02  8.7234E+01 −2.0873E+01  R2 −1.7701E+01 −2.7353E+04 8.0421E+04−1.2817E+05 8.3520E+04 R3  5.0121E+01 −1.1061E+05 3.8147E+05 −7.2097E+055.6806E+05 R4 −1.5025E+02 −5.3688E+01 3.3821E+01 −1.2447E+01 2.0657E+00R5 −1.4712E+00 −2.1121E+01 1.1042E+01 −3.2658E+00 4.1654E−01 R6−4.0245E+00 −5.0569E+00 2.2337E+00 −5.4892E−01 5.7572E−02 R7 −3.0398E+00−1.5070E+00 5.8756E−01 −1.2391E−01 1.0784E−02 R8 −5.4918E+00 −6.1794E−021.2318E−02 −1.3763E−03 6.6134E−05

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 / / P1R2 0 / / P2R1 0 / / P2R2 2 0.2550.965 P3R1 2 0.565 1.255 P3R2 1 1.265 / P4R1 2 0.355 1.215 P4R2 2 0.4451.815

TABLE 12 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 1 0.385 P3R1 1 1.035 P3R2 0 / P4R1 1 0.545 P4R2 1 0.965

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nmafter passing the camera optical lens 30 according to Embodiment 3. FIG.12 illustrates a field curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 30 accordingto Embodiment 3. A field curvature S in FIG. 12 is a field curvature ina sagittal direction, and T is a field curvature in a tangentialdirection.

In the embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 30 is 0.836 mm, an image height IH of 1.0H is 2.214 mm, anFOV is 98.20°. The camera optical lens 30 can meet the designrequirements of a wide-angle and ultra-thin, and its on-axis andoff-axis chromatic aberrations are fully corrected, thereby achievingexcellent optical characteristics.

Embodiment 4

FIG. 13 is a schematic diagram of a structure of a camera optical lens40 according to Embodiment 4 of the present disclosure. Embodiment 4 isbasically the same as Embodiment 1 and involves symbols having the samemeanings as Embodiment 1, and only differences therebetween will bedescribed in the following.

Table 13 and Table 14 show design data of a camera optical lens 40 inEmbodiment 4 of the present disclosure.

TABLE 13 R d nd vd S1 ∞ d0= −0.800 R1 2.190 d1= 0.545 nd1 1.6700 v119.39 R2 1.357 d2= 0.237 R3 3.526 d3= 1.451 nd2 1.5444 v2 55.82 R4 2.913d4= 0.032 R5 1.365 d5= 1.051 nd3 1.5444 v3 55.82 R6 −0.947  d6= 0.037 R72.066 d7= 0.530 nd4 1.6700 v4 19.39 R8 0.744 d8= 0.443 R9 ∞ d9= 0.210ndg 1.5168 vg 64.17 R10 ∞ d10= 0.449

Table 14 shows aspherical surface data of each lens of the cameraoptical lens 40 in Embodiment 4 of the present disclosure.

TABLE 14 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 R1 −2.5685E+01 3.6343E−01  4.1580E−01 −6.3110E+00   3.1086E+01−8.6915E+01  R2 −1.1296E+01 1.1169E+00 −3.5058E+00 5.6242E+01−6.9683E+02 5.5758E+03 R3 −1.3423E+01 2.7579E−01 −5.5162E+00 1.4157E+02−2.0989E+03 1.9312E+04 R4 −8.3680E+01 3.9166E−01 −5.0118E+00 1.7068E+01−3.7231E+01 5.4712E+01 R5 −1.7761E+00 3.0533E−01 −3.0198E+00 9.6949E+00−1.9405E+01 2.5184E+01 R6 −3.9450E+00 4.7389E−01 −1.5582E+00 3.5672E+00−6.1209E+00 6.9827E+00 R7 −8.5410E−01 4.8276E−02 −1.2308E+00 1.9858E+00−2.4341E+00 2.3379E+00 R8 −4.0634E+00 −1.0805E−01  −2.2239E−014.1752E−01 −3.6331E−01 1.8958E−01 Conic coefficient Aspherical surfacecoefficients k A14 A16 A18 A20 R1 −2.5685E+01  1.4855E+02 −1.5305E+02  8.7331E+01 −2.1210E+01  R2 −1.1296E+01 −2.7397E+04 8.0326E+04−1.2803E+05 8.4430E+04 R3 −1.3423E+01 −1.1063E+05 3.8138E+05 −7.2075E+055.7127E+05 R4 −8.3680E+01 −5.3680E+01 3.3828E+01 −1.2447E+01 2.0526E+00R5 −1.7761E+00 −2.1123E+01 1.1040E+01 −3.2663E+00 4.1694E−01 R6−3.9450E+00 −5.0569E+00 2.2337E+00 −5.4894E−01 5.7526E−02 R7 −8.5410E−01−1.5071E+00 5.8754E−01 −1.2389E−01 1.0806E−02 R8 −4.0634E+00 −6.1798E−021.2318E−02 −1.3761E−03 6.6241E−05

Table 15 and Table 16 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 40 accordingto Embodiment 4 of the present disclosure.

TABLE 15 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.945 / P1R2 0 / / P2R1 1 0.495 / P2R2 20.275 0.985 P3R1 1 0.505 / P3R2 1 1.355 / P4R1 2 0.395 1.275 P4R2 20.465 1.895

TABLE 16 Number of arrest points Arrest point position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 1 0.435 P3R1 1 0.925 P3R2 0 / P4R1 1 0.625 P4R2 1 1.055

FIG. 14 and FIG. 15 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nmafter passing the camera optical lens 40 according to Embodiment 4. FIG.16 illustrates a field curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 40 accordingto Embodiment 4. A field curvature S in FIG. 16 is a field curvature ina sagittal direction, and T is a field curvature in a tangentialdirection.

Table 17 in the following shows various values of Embodiment 4, and alsovalues corresponding to parameters which are specified in the aboveconditions. Obviously, the camera optical lens 40 satisfies aboveconditions.

In the embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 30 is 0.951 mm, an image height IH of 1.0H is 2.214 mm, anFOV is 94.80°. The camera optical lens can 40 meet the designrequirements of a wide-angle and ultra-thin, and its on-axis andoff-axis chromatic aberrations are fully corrected, thereby achievingexcellent optical characteristics.

TABLE 17 Parameters and Embodi- Embodi- Embodi- Embodi- conditions ment1 ment 2 ment 3 ment 4 f1/f −5.00 −2.04 −3.71 −3.42 f3/f 0.55 0.41 0.690.58 f4/f −0.80 −0.97 −1.19 −0.98 (R3 + R4)/ 2.50 9.99 19.97 10.50 (R3 −R4) d1/d2 2.44 1.20 3.48 2.30 f 1.990 2.256 1.840 2.092 f1 −9.945 −4.605−6.833 −7.147 f2 −8.800 12.721 −1087.042 −187.234 f3 1.103 0.914 1.2771.218 f4 −1.594 −2.181 −2.197 −2.048 f12 −4.332 −3.999 −6.202 −5.899 FNO2.20 2.20 2.20 2.20 TTL 4.871 5.117 4.896 4.985 IH 2.214 2.214 2.2142.214 FOV 96.00° 89.60° 98.20° 94.80°

The above is only illustrates some embodiments of the presentdisclosure, in practice, one having ordinary skill in the art can makevarious modifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens with a negative refractive power; asecond lens; a third lens with a positive refractive power; a fourthlens with a negative refractive power; and wherein the camera opticallens satisfies the following conditions:−5.00≤f1/f≤−2.00;0.40≤f3/f≤0.70;−1.20≤f4/f≤−0.80;2.50≤(R3+R4)/(R3−R4)≤20.00; and1.20≤d1/d2≤3.50; where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; f3 denotes a focallength of the third lens; f4 denotes a focal length of the fourth lens;R3 denotes a curvature radius of an object-side surface of the secondlens; R4 denotes a curvature radius of an image-side surface of thesecond lens; d1 denotes an on-axis thickness of the first lens; and d2denotes an on-axis distance from an image-side surface of the first lensto the object-side surface of the second lens.
 2. The camera opticallens according to claim 1 further satisfying the following condition:1.50≤R7/R8≤6.00; where R7 denotes a curvature radius of an object-sidesurface of the fourth lens; and R8 denotes a curvature radius of animage-side surface of the fourth lens.
 3. The camera optical lensaccording to claim 1, wherein, an object-side surface of the first lensis convex in a paraxial region, and the image-side surface of the firstlens is concave in the paraxial region, the camera optical lens furthersatisfies the following conditions:1.78≤(R1+R2)/(R1−R2)≤7.50; and0.05≤d1/TTL≤0.18; where R1 denotes a curvature radius of the object-sidesurface of the first lens; R2 denotes a curvature radius of theimage-side surface of the first lens; and TTL denotes a total opticallength from the object-side surface of the first lens to an imagesurface of the camera optical lens along an optical axis.
 4. The cameraoptical lens according to claim 3 further satisfying the followingconditions:2.85≤(R1+R2)/(R1−R2)≤6.00; and0.08≤d1/TTL≤0.15.
 5. The camera optical lens according to claim 1,wherein, the object-side surface of the second lens is convex in aparaxial region, and the image-side surface of the second lens isconcave in the paraxial region, the camera optical lens furthersatisfies the following conditions:−1181.57≤f2/f≤8.46; and0.14≤d3/TTL≤0.52; where f2 denotes a focal length of the second lens; d3denotes an on-axis thickness of the second lens; and TTL denotes a totaloptical length from an object-side surface of the first lens to an imagesurface of the camera optical lens along an optical axis.
 6. The cameraoptical lens according to claim 5 further satisfying the followingconditions:−738.48≤f2/f≤6.77; and0.23≤d3/TTL≤0.42.
 7. The camera optical lens according to claim 1,wherein, an object-side surface of the third lens is convex in aparaxial region, and an image-side surface of the third lens is convexin the paraxial region, the camera optical lens further satisfies thefollowing conditions:0.04≤(R5+R6)/(R5−R6)≤0.27; and0.05≤d5/TTL≤0.35; where R5 denotes a curvature radius of the object-sidesurface of the third lens; R6 denotes a curvature radius of theimage-side surface of the third lens; d5 denotes an on-axis thickness ofthe third lens; and TTL denotes a total optical length from anobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 8. The camera optical lens accordingto claim 7 further satisfying the following conditions:0.07≤(R5+R6)/(R5−R6)≤0.22; and0.08≤d5/TTL≤0.28.
 9. The camera optical lens according to claim 1,wherein, an object-side surface of the fourth lens is convex in aparaxial region, and an image-side surface of the fourth lens is concavein the paraxial region, the camera optical lens further satisfies thefollowing conditions:0.70≤(R7+R8)/(R7−R8)≤7.42; and0.01≤d7/TTL≤0.20; Where R7 denotes a curvature radius of the object-sidesurface of the fourth lens; R8 denotes a curvature radius of theimage-side surface of the fourth lens; d7 denotes an on-axis thicknessof the fourth lens; and TTL denotes a total optical length from anobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 10. The camera optical lensaccording to claim 9 further satisfying the following conditions:1.12≤(R7+R8)/(R7−R8)≤5.93; and0.02≤d7/TTL≤0.16.
 11. The camera optical lens according to claim 1further satisfying the following condition:TTL/IH≤2.32; where, IH denotes an image height of the camera opticallens; and TTL denotes a total optical length from an object-side surfaceof the first lens to an image surface of the camera optical lens alongan optical axis.
 12. The camera optical lens according to claim 1,wherein the camera optical lens further satisfies the followingcondition:FOV≥89.00°; where, FOV denotes a field of view of the camera opticallens in a diagonal direction.
 13. The camera optical lens according toclaim 1 further satisfying the following condition:−6.74≤f12/f≤−1.18; where f12 denotes a combined focal length of thefirst lens and the second lens.
 14. The camera optical lens according toclaim 1 further satisfying the following condition:FNO≤2.27; where FNO denotes an F number of the camera optical lens.